Ok, here's what I got:

````
$ ack test_directories
lib/pedant/config.rb
51:    def self.test_directories
53:      Pedant::Gem.test_directories(suite)
78:      _test_dirs = test_directories

lib/pedant/gem.rb
47:      def test_directories(suite)
````

That's what I thought. If it turns out we need it often in tests, then we can create a helper wrapper for this.